// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_CAST_CAST_SENDER_IMPL_H_
#define MEDIA_CAST_CAST_SENDER_IMPL_H_

#include <memory>

#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "media/cast/cast_environment.h"
#include "media/cast/cast_sender.h"
#include "media/cast/sender/audio_sender.h"
#include "media/cast/sender/video_sender.h"

namespace media {

namespace cast {
    class AudioSender;
    class VideoSender;

    // This class combines all required sending objects such as the audio and video
    // senders, pacer, packet receiver and frame input.
    class CastSenderImpl : public CastSender {
    public:
        CastSenderImpl(scoped_refptr<CastEnvironment> cast_environment,
            CastTransport* const transport_sender);

        void InitializeAudio(const FrameSenderConfig& audio_config,
            const StatusChangeCallback& status_change_cb) final;
        void InitializeVideo(
            const FrameSenderConfig& video_config,
            const StatusChangeCallback& status_change_cb,
            const CreateVideoEncodeAcceleratorCallback& create_vea_cb,
            const CreateVideoEncodeMemoryCallback& create_video_encode_mem_cb) final;

        void SetTargetPlayoutDelay(base::TimeDelta new_target_playout_delay) final;

        ~CastSenderImpl() final;

        scoped_refptr<AudioFrameInput> audio_frame_input() final;
        scoped_refptr<VideoFrameInput> video_frame_input() final;

    private:
        void ReceivedPacket(std::unique_ptr<Packet> packet);
        void OnAudioStatusChange(const StatusChangeCallback& status_change_cb,
            OperationalStatus status);
        void OnVideoStatusChange(const StatusChangeCallback& status_change_cb,
            OperationalStatus status);

        std::unique_ptr<AudioSender> audio_sender_;
        std::unique_ptr<VideoSender> video_sender_;
        scoped_refptr<AudioFrameInput> audio_frame_input_;
        scoped_refptr<VideoFrameInput> video_frame_input_;
        scoped_refptr<CastEnvironment> cast_environment_;
        // The transport sender is owned by the owner of the CastSender, and should be
        // valid throughout the lifetime of the CastSender.
        CastTransport* const transport_sender_;

        // NOTE: Weak pointers must be invalidated before all other member variables.
        base::WeakPtrFactory<CastSenderImpl> weak_factory_;

        DISALLOW_COPY_AND_ASSIGN(CastSenderImpl);
    };

} // namespace cast
} // namespace media

#endif // MEDIA_CAST_CAST_SENDER_IMPL_H_
